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    <title>Document</title>
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                <li class="current">商品介绍</li>
                <li>规格与包装</li>
                <li>售后保障</li>
                <li>商品评价</li>
                <li>手机社区</li>
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            <div class="item" style="display: block;">商品介绍模块内容</div>
            <div class="item" style="display: none;">规格与包装模块内容</div>
            <div class="item" style="display: none;">售后保障模块内容</div>
            <div class="item" style="display: none;">商品评价模块内容</div>
            <div class="item" style="display: none;">手机社区模块内容</div>
        </div>
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